Check your forecast for clear skies, because the Northern Lights may be shining over parts of Canada tonight.

Early on Sunday, two immense clouds of charged particles erupted from the surface of the Sun. These coronal mass ejections (CMEs) have merged while slowly travelling through interplanetary space. The combined solar storm is expected to pass Earth's orbit later on Tuesday, with one edge of the cloud likely to sweep past Earth itself.

[ENLIL model - Oct 7 2025 - NOAA SWPC] ENLIL model - Oct 7 2025 - NOAA SWPC

_This computer model run shows the moment that the solar storm is expected to sweep past Earth, scoring a glancing blow on the planet's magnetic field, at around 5 pm EDT on October 7, 2025. Earth and the CME have been labelled for convenience. (NOAA SWPC/Scott Sutherland)_

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